cmd-respawn-window.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20
  21 #include <unistd.h>
  22
  23 #include "tmux.h"
  24
  25 /*
  26  * Respawn a window (restart the command). Kill existing if -k given.
  27  */
  28
  29 int     cmd_respawn_window_exec(struct cmd *, struct cmd_ctx *);
  30
  31 const struct cmd_entry cmd_respawn_window_entry = {
  32         "respawn-window", "respawnw",
  33         "kt:", 0, 1,
  34         "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
  35         0,
  36         NULL,
  37         NULL,
  38         cmd_respawn_window_exec
  39 };
  40
  41 int
  42 cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
  43 {
  44         struct args             *args = self->args;
  45         struct winlink          *wl;
  46         struct window           *w;
  47         struct window_pane      *wp;
  48         struct session          *s;
  49         struct environ           env;
  50         const char              *cmd;
  51         char                    *cause;
  52
  53         if ((wl = cmd_find_window(ctx, args_get(args, 't'), &s)) == NULL)
  54                 return (-1);
  55         w = wl->window;
  56
  57         if (!args_has(self->args, 'k')) {
  58                 TAILQ_FOREACH(wp, &w->panes, entry) {
  59                         if (wp->fd == -1)
  60                                 continue;
  61                         ctx->error(ctx,
  62                             "window still active: %s:%d", s->name, wl->idx);
  63                         return (-1);
  64                 }
  65         }
  66
  67         environ_init(&env);
  68         environ_copy(&global_environ, &env);
  69         environ_copy(&s->environ, &env);
  70         server_fill_environ(s, &env);
  71
  72         wp = TAILQ_FIRST(&w->panes);
  73         TAILQ_REMOVE(&w->panes, wp, entry);
  74         layout_free(w);
  75         window_destroy_panes(w);
  76         TAILQ_INSERT_HEAD(&w->panes, wp, entry);
  77         window_pane_resize(wp, w->sx, w->sy);
  78         if (args->argc != 0)
  79                 cmd = args->argv[0];
  80         else
  81                 cmd = NULL;
  82         if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
  83                 ctx->error(ctx, "respawn window failed: %s", cause);
  84                 xfree(cause);
  85                 environ_free(&env);
  86                 server_destroy_pane(wp);
  87                 return (-1);
  88         }
  89         layout_init(w);
  90         screen_reinit(&wp->base);
  91         window_set_active_pane(w, wp);
  92
  93         recalculate_sizes();
  94         server_redraw_window(w);
  95
  96         environ_free(&env);
  97         return (0);
  98 }